Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. |
| 3 | * |
| 4 | * Licensed under the terms of the GNU GPL License version 2. |
| 5 | * |
| 6 | * Ideas taken over from the perf userspace tool (included in the Linus |
| 7 | * kernel git repo): subcommand builtins and param parsing. |
| 8 | */ |
| 9 | |
| 10 | #include <stdio.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <string.h> |
| 13 | #include <unistd.h> |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 14 | #include <errno.h> |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 15 | |
| 16 | #include "builtin.h" |
| 17 | #include "helpers/helpers.h" |
| 18 | #include "helpers/bitmask.h" |
| 19 | |
| 20 | struct cmd_struct { |
| 21 | const char *cmd; |
| 22 | int (*main)(int, const char **); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 23 | int needs_root; |
| 24 | }; |
| 25 | |
| 26 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
| 27 | |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 28 | static int cmd_help(int argc, const char **argv); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 29 | |
| 30 | /* Global cpu_info object available for all binaries |
| 31 | * Info only retrieved from CPU 0 |
| 32 | * |
| 33 | * Values will be zero/unknown on non X86 archs |
| 34 | */ |
| 35 | struct cpupower_cpu_info cpupower_cpu_info; |
| 36 | int run_as_root; |
| 37 | /* Affected cpus chosen by -c/--cpu param */ |
| 38 | struct bitmask *cpus_chosen; |
| 39 | |
| 40 | #ifdef DEBUG |
| 41 | int be_verbose; |
| 42 | #endif |
| 43 | |
| 44 | static void print_help(void); |
| 45 | |
| 46 | static struct cmd_struct commands[] = { |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 47 | { "frequency-info", cmd_freq_info, 0 }, |
| 48 | { "frequency-set", cmd_freq_set, 1 }, |
| 49 | { "idle-info", cmd_idle_info, 0 }, |
| 50 | { "set", cmd_set, 1 }, |
| 51 | { "info", cmd_info, 0 }, |
| 52 | { "monitor", cmd_monitor, 0 }, |
| 53 | { "help", cmd_help, 0 }, |
| 54 | /* { "bench", cmd_bench, 1 }, */ |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 55 | }; |
| 56 | |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 57 | static void print_help(void) |
| 58 | { |
| 59 | unsigned int i; |
| 60 | |
| 61 | #ifdef DEBUG |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 62 | printf(_("Usage:\tcpupower [-d|--debug] [-c|--cpu cpulist ] <command> [<args>]\n")); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 63 | #else |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 64 | printf(_("Usage:\tcpupower [-c|--cpu cpulist ] <command> [<args>]\n")); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 65 | #endif |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 66 | printf(_("Supported commands are:\n")); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 67 | for (i = 0; i < ARRAY_SIZE(commands); i++) |
| 68 | printf("\t%s\n", commands[i].cmd); |
Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 69 | printf(_("\nNot all commands can make use of the -c cpulist option.\n")); |
| 70 | printf(_("\nUse 'cpupower help <command>' for getting help for above commands.\n")); |
| 71 | } |
| 72 | |
| 73 | static int print_man_page(const char *subpage) |
| 74 | { |
| 75 | int len; |
| 76 | char *page; |
| 77 | |
| 78 | len = 10; /* enough for "cpupower-" */ |
| 79 | if (subpage != NULL) |
| 80 | len += strlen(subpage); |
| 81 | |
| 82 | page = malloc(len); |
| 83 | if (!page) |
| 84 | return -ENOMEM; |
| 85 | |
| 86 | sprintf(page, "cpupower"); |
| 87 | if ((subpage != NULL) && strcmp(subpage, "help")) { |
| 88 | strcat(page, "-"); |
| 89 | strcat(page, subpage); |
| 90 | } |
| 91 | |
| 92 | execlp("man", "man", page, NULL); |
| 93 | |
| 94 | /* should not be reached */ |
| 95 | return -EINVAL; |
| 96 | } |
| 97 | |
| 98 | static int cmd_help(int argc, const char **argv) |
| 99 | { |
| 100 | if (argc > 1) { |
| 101 | print_man_page(argv[1]); /* exits within execlp() */ |
| 102 | return EXIT_FAILURE; |
| 103 | } |
| 104 | |
| 105 | print_help(); |
| 106 | return EXIT_SUCCESS; |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 107 | } |
| 108 | |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 109 | static void print_version(void) |
| 110 | { |
| 111 | printf(PACKAGE " " VERSION "\n"); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 112 | printf(_("Report errors and bugs to %s, please.\n"), PACKAGE_BUGREPORT); |
| 113 | } |
| 114 | |
| 115 | static void handle_options(int *argc, const char ***argv) |
| 116 | { |
| 117 | int ret, x, new_argc = 0; |
| 118 | |
| 119 | if (*argc < 1) |
| 120 | return; |
| 121 | |
| 122 | for (x = 0; x < *argc && ((*argv)[x])[0] == '-'; x++) { |
| 123 | const char *param = (*argv)[x]; |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 124 | if (!strcmp(param, "-h") || !strcmp(param, "--help")) { |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 125 | print_help(); |
| 126 | exit(EXIT_SUCCESS); |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 127 | } else if (!strcmp(param, "-c") || !strcmp(param, "--cpu")) { |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 128 | if (*argc < 2) { |
| 129 | print_help(); |
| 130 | exit(EXIT_FAILURE); |
| 131 | } |
| 132 | if (!strcmp((*argv)[x+1], "all")) |
| 133 | bitmask_setall(cpus_chosen); |
| 134 | else { |
| 135 | ret = bitmask_parselist( |
| 136 | (*argv)[x+1], cpus_chosen); |
| 137 | if (ret < 0) { |
| 138 | fprintf(stderr, _("Error parsing cpu " |
| 139 | "list\n")); |
| 140 | exit(EXIT_FAILURE); |
| 141 | } |
| 142 | } |
| 143 | x += 1; |
| 144 | /* Cut out param: cpupower -c 1 info -> cpupower info */ |
| 145 | new_argc += 2; |
| 146 | continue; |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 147 | } else if (!strcmp(param, "-v") || |
| 148 | !strcmp(param, "--version")) { |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 149 | print_version(); |
| 150 | exit(EXIT_SUCCESS); |
| 151 | #ifdef DEBUG |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 152 | } else if (!strcmp(param, "-d") || !strcmp(param, "--debug")) { |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 153 | be_verbose = 1; |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 154 | new_argc++; |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 155 | continue; |
| 156 | #endif |
| 157 | } else { |
| 158 | fprintf(stderr, "Unknown option: %s\n", param); |
| 159 | print_help(); |
| 160 | exit(EXIT_FAILURE); |
| 161 | } |
| 162 | } |
| 163 | *argc -= new_argc; |
| 164 | *argv += new_argc; |
| 165 | } |
| 166 | |
| 167 | int main(int argc, const char *argv[]) |
| 168 | { |
| 169 | const char *cmd; |
| 170 | unsigned int i, ret; |
| 171 | |
| 172 | cpus_chosen = bitmask_alloc(sysconf(_SC_NPROCESSORS_CONF)); |
| 173 | |
| 174 | argc--; |
| 175 | argv += 1; |
| 176 | |
| 177 | handle_options(&argc, &argv); |
| 178 | |
| 179 | cmd = argv[0]; |
| 180 | |
| 181 | if (argc < 1) { |
| 182 | print_help(); |
| 183 | return EXIT_FAILURE; |
| 184 | } |
| 185 | |
| 186 | setlocale(LC_ALL, ""); |
Dominik Brodowski | a1ce5ba | 2011-04-19 20:33:50 +0200 | [diff] [blame] | 187 | textdomain(PACKAGE); |
Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 188 | |
| 189 | /* Turn "perf cmd --help" into "perf help cmd" */ |
| 190 | if (argc > 1 && !strcmp(argv[1], "--help")) { |
| 191 | argv[1] = argv[0]; |
| 192 | argv[0] = cmd = "help"; |
| 193 | } |
| 194 | |
| 195 | get_cpu_info(0, &cpupower_cpu_info); |
| 196 | run_as_root = !getuid(); |
| 197 | |
| 198 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
| 199 | struct cmd_struct *p = commands + i; |
| 200 | if (strcmp(p->cmd, cmd)) |
| 201 | continue; |
| 202 | if (!run_as_root && p->needs_root) { |
| 203 | fprintf(stderr, _("Subcommand %s needs root " |
| 204 | "privileges\n"), cmd); |
| 205 | return EXIT_FAILURE; |
| 206 | } |
| 207 | ret = p->main(argc, argv); |
| 208 | if (cpus_chosen) |
| 209 | bitmask_free(cpus_chosen); |
| 210 | return ret; |
| 211 | } |
| 212 | print_help(); |
| 213 | return EXIT_FAILURE; |
| 214 | } |